# SDR F3LA202003260024

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 26, 2020
- Submitted: March 26, 2020
- Operation: Air carrier
- Aircraft: [N316FR](https://openairdocs.org/aircraft/N316FR), registered now
- Make and model: Airbus A320-251N
- Registry model: [Airbus A320-251N](https://openairdocs.org/model/airbus-a320-251n) (OpenAirDocs)
- Aircraft serial: 07824
- Aircraft time: 9,555 hours, 3,992 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Epsu
- Part number: 32146210
- Part serial: 156391
- Condition: Failed
- Location: Cabin
- Part time: 9,555 hours, 3,992 cycles
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/F3LA202003260024

## Discrepancy

DISCREPANCY: LP1241800 ITEM 1: DURING OVERNIGHT MAINTENANCE, EPSU SYS TEST FAILED DUE TO EPSU 11WL FAULT. CORRECTIVE  ACTION:  REMOVED AND REPLACED EPSU 11WL, DUE TO FAULTING PERFORMED EPSU SYS TEST, TEST PASSED. REF AMM 33-51-38-000-001-A AND AMM 33-51-38-400-001-A. AIRCRAFT RETURNED TO SERVICE BY 0630 HAD A 2054 SCHEDULED DEPARTURE TIME.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.